@Authors: Silva Bautista Alexis Eduardo.
@imprimir suma de los pares del 15 al 20.
@Input file: problema33.s
@Output:

.section	.data
sum:
    .ascii " "
.section	.text
.globl _start

_start:

mov %r1, $16
mov %r2, $18
mov %r3, $20

add %r0,%r1,%r2
add %r0,%r0,%r3

mov r7, $1         	
svc $0  

.end
